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Welded flange is a tubular member, means with neck tube and there is a transition and the tube butt weld flanges. Now widely used, because welded flange distortion, good sealing, widely used, there is a corresponding rigidity and elasticity requirements and reasonable butt thinning transition.
And because the distance from the large weld joints, weld joints can from temperature deformation, and adopted more sophisticated loudspeaker body structure, suitable for pressure or temperature fluctuations pipeline or high temperature, high pressure and low temperature piping, PN 2.5MPa greater than generally used for connecting pipes and valves; also be used to transport expensive pipeline flammable, explosive media. In the production process, in the production of welded flange welding and strict control of technical parameters to ensure that production and use can fully play its role and value.

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